diff --git a/cloud/shepherd/manager/provisioner_test.go b/cloud/shepherd/manager/provisioner_test.go
index 5adc408..a145bdc 100644
--- a/cloud/shepherd/manager/provisioner_test.go
+++ b/cloud/shepherd/manager/provisioner_test.go
@@ -88,8 +88,8 @@
 func TestProvisioner_resolvePossiblyUsed(t *testing.T) {
 	const providedMachineID = "provided-machine"
 
-	providedMachines := map[shepherd.ProviderID]bool{
-		providedMachineID: true,
+	providedMachines := map[shepherd.ProviderID]shepherd.Machine{
+		providedMachineID: nil,
 	}
 
 	tests := []struct {